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authorDamjan Marion <damjan.marion@gmail.com>2020-02-13 18:14:06 +0100
committerDamjan Marion <damjan.marion@gmail.com>2020-02-13 18:17:54 +0100
commitf75defa7676759fa81ae75e7edd492572c6b8fd6 (patch)
treeda5eecdcdec868d14d81db8c59e2d1271899d49b /src/vppinfra/vector_avx512.h
parentadcfb15fa0b08403c5b5b170149f7d3662e65761 (diff)
vppinfra: add 128-bit and 512-bit a ^ b ^ c shortcut
This allows us to combine 2 XOR operations into signle instruction which makes difference in crypto op: - in x86, by using ternary logic instruction - on ARM, by using EOR3 instruction (available with sha3 feature) Type: refactor Change-Id: Ibdf9001840399d2f838d491ca81b57cbd8430433 Signed-off-by: Damjan Marion <damjan.marion@gmail.com>
Diffstat (limited to 'src/vppinfra/vector_avx512.h')
-rw-r--r--src/vppinfra/vector_avx512.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/vppinfra/vector_avx512.h b/src/vppinfra/vector_avx512.h
index c54d8cd2499..29d96f85ce9 100644
--- a/src/vppinfra/vector_avx512.h
+++ b/src/vppinfra/vector_avx512.h
@@ -143,6 +143,13 @@ u64x8_permute (u64x8 a, u64x8 b, u64x8 mask)
#define u32x16_ternary_logic(a, b, c, d) \
(u32x16) _mm512_ternarylogic_epi32 ((__m512i) a, (__m512i) b, (__m512i) c, d)
+static_always_inline u8x64
+u8x64_xor3 (u8x64 a, u8x64 b, u8x64 c)
+{
+ return (u8x64) _mm512_ternarylogic_epi32 ((__m512i) a, (__m512i) b,
+ (__m512i) c, 0x96);
+}
+
static_always_inline void
u32x16_transpose (u32x16 m[16])
{